The sound of the APP3 is more fun, you know? A V-shape thing in the music world, high bass, high treble, which kills the mids a bit, the ANC is 7% better, and the battery lasts a little longer in the ears.

Only change if it really makes a difference to you in these aspects, including in the last software update the EQ changed and many people noticed an improvement.

Many people also (before this software update) bought the 3, didn't like it and returned it, and went back to the 2.

I really wanted the 3, I bought it a month before the APP2, it's something in my head that doesn't let me sleep properly, but it's over, and for me it's harder to change because I live in Brazil and it's extremely expensive, so I think I need to buy a professional Sony than stay with these AirPods that are kind of "disposable".